Rigidity, conformation, and solvation of native and oxidized tannin macromolecules in water-ethanol solution.

Zanchi D, Konarev PV, Tribet C, Baron A, Svergun DI, Guyot S, J Chem Phys 130(24):245103 (2009) Europe PMC

SASDMD3 – Oxidized tannin macromolecules (DP7, average polymerization 6.3) in water-ethanol solution (water fraction 20%)

Oxidized tannin macromolecules (DP7, average polymerization 6.3) in water-ethanol solution (water fraction 20%)
MWexperimental 2 kDa
MWexpected 2 kDa
log I(s) 1.77×10-2 1.77×10-3 1.77×10-4 1.77×10-5
Oxidized tannin macromolecules (DP7, average polymerization 6.3) in water-ethanol solution (water fraction 20%) small angle scattering data  s, nm-1
ln I(s)
Oxidized tannin macromolecules (DP7, average polymerization 6.3) in water-ethanol solution (water fraction 20%) Guinier plot ln 1.77×10-2 Rg: 1.1 nm 0 (1.1 nm)-2 s2
(sRg)2I(s)/I(0)
Oxidized tannin macromolecules (DP7, average polymerization 6.3) in water-ethanol solution (water fraction 20%) Kratky plot 1.104 0 √3 sRg
p(r)
Oxidized tannin macromolecules (DP7, average polymerization 6.3) in water-ethanol solution (water fraction 20%) pair distance distribution function Rg: 1.1 nm 0 Dmax: 3.5 nm

Data validation

Fits and models

log I(s)
 s, nm-1
Oxidized tannin macromolecules (DP7, average polymerization 6.3) in water-ethanol solution (water fraction 20%) DAMMIN model
Synchrotron SAXS data from solutions of Oxidized tannin macromolecules (DP7, average polymerization 6.3) in water-ethanol solution (water fraction 20%), pH 7 were collected on the EMBL X33 beam line at the DORIS III storage ring (Hamburg, Germany) using a Pilatus 1M-W detector at a sample-detector distance of 2.7 m and at a wavelength of λ = 0.15 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). One solute concentration of 10.00 mg/ml was measured at 25°C. Four successive 30 second frames were collected. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.

Tags: X33
Oxidized tannin macromolecules (DP7, average polymerization 6.3) in water-ethanol solution (water fraction 20%) (DP7oxw20)
Mol. type   Other
Olig. state   Heptamer
Mon. MW   0.3 kDa
Chemical formula